drivers/media/platform/s5p-g2d/g2d.c

   1 /*
   2  * Samsung S5P G2D - 2D Graphics Accelerator Driver
   3  *
   4  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   5  * Kamil Debski, <k.debski@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the
  10  * License, or (at your option) any later version
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/fs.h>
  15 #include <linux/version.h>
  16 #include <linux/timer.h>
  17 #include <linux/sched.h>
  18 #include <linux/slab.h>
  19 #include <linux/clk.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/of.h>
  22
  23 #include <linux/platform_device.h>
  24 #include <media/v4l2-mem2mem.h>
  25 #include <media/v4l2-device.h>
  26 #include <media/v4l2-ioctl.h>
  27 #include <media/videobuf2-core.h>
  28 #include <media/videobuf2-dma-contig.h>
  29
  30 #include "g2d.h"
  31 #include "g2d-regs.h"
  32
  33 #define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh)
  34
  35 static struct g2d_fmt formats[] = {
  36         {
  37                 .name   = "XRGB_8888",
  38                 .fourcc = V4L2_PIX_FMT_RGB32,
  39                 .depth  = 32,
  40                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888),
  41         },
  42         {
  43                 .name   = "RGB_565",
  44                 .fourcc = V4L2_PIX_FMT_RGB565X,
  45                 .depth  = 16,
  46                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_RGB_565),
  47         },
  48         {
  49                 .name   = "XRGB_1555",
  50                 .fourcc = V4L2_PIX_FMT_RGB555X,
  51                 .depth  = 16,
  52                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555),
  53         },
  54         {
  55                 .name   = "XRGB_4444",
  56                 .fourcc = V4L2_PIX_FMT_RGB444,
  57                 .depth  = 16,
  58                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444),
  59         },
  60         {
  61                 .name   = "PACKED_RGB_888",
  62                 .fourcc = V4L2_PIX_FMT_RGB24,
  63                 .depth  = 24,
  64                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888),
  65         },
  66 };
  67 #define NUM_FORMATS ARRAY_SIZE(formats)
  68
  69 static struct g2d_frame def_frame = {
  70         .width          = DEFAULT_WIDTH,
  71         .height         = DEFAULT_HEIGHT,
  72         .c_width        = DEFAULT_WIDTH,
  73         .c_height       = DEFAULT_HEIGHT,
  74         .o_width        = 0,
  75         .o_height       = 0,
  76         .fmt            = &formats[0],
  77         .right          = DEFAULT_WIDTH,
  78         .bottom         = DEFAULT_HEIGHT,
  79 };
  80
  81 static struct g2d_fmt *find_fmt(struct v4l2_format *f)
  82 {
  83         unsigned int i;
  84         for (i = 0; i < NUM_FORMATS; i++) {
  85                 if (formats[i].fourcc == f->fmt.pix.pixelformat)
  86                         return &formats[i];
  87         }
  88         return NULL;
  89 }
  90
  91
  92 static struct g2d_frame *get_frame(struct g2d_ctx *ctx,
  93                                                         enum v4l2_buf_type type)
  94 {
  95         switch (type) {
  96         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
  97                 return &ctx->in;
  98         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
  99                 return &ctx->out;
 100         default:
 101                 return ERR_PTR(-EINVAL);
 102         }
 103 }
 104
 105 static int g2d_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
 106                            unsigned int *nbuffers, unsigned int *nplanes,
 107                            unsigned int sizes[], void *alloc_ctxs[])
 108 {
 109         struct g2d_ctx *ctx = vb2_get_drv_priv(vq);
 110         struct g2d_frame *f = get_frame(ctx, vq->type);
 111
 112         if (IS_ERR(f))
 113                 return PTR_ERR(f);
 114
 115         sizes[0] = f->size;
 116         *nplanes = 1;
 117         alloc_ctxs[0] = ctx->dev->alloc_ctx;
 118
 119         if (*nbuffers == 0)
 120                 *nbuffers = 1;
 121
 122         return 0;
 123 }
 124
 125 static int g2d_buf_prepare(struct vb2_buffer *vb)
 126 {
 127         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 128         struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
 129
 130         if (IS_ERR(f))
 131                 return PTR_ERR(f);
 132         vb2_set_plane_payload(vb, 0, f->size);
 133         return 0;
 134 }
 135
 136 static void g2d_buf_queue(struct vb2_buffer *vb)
 137 {
 138         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 139         v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
 140 }
 141
 142 static struct vb2_ops g2d_qops = {
 143         .queue_setup    = g2d_queue_setup,
 144         .buf_prepare    = g2d_buf_prepare,
 145         .buf_queue      = g2d_buf_queue,
 146 };
 147
 148 static int queue_init(void *priv, struct vb2_queue *src_vq,
 149                                                 struct vb2_queue *dst_vq)
 150 {
 151         struct g2d_ctx *ctx = priv;
 152         int ret;
 153
 154         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 155         src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 156         src_vq->drv_priv = ctx;
 157         src_vq->ops = &g2d_qops;
 158         src_vq->mem_ops = &vb2_dma_contig_memops;
 159         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 160         src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 161         src_vq->lock = &ctx->dev->mutex;
 162
 163         ret = vb2_queue_init(src_vq);
 164         if (ret)
 165                 return ret;
 166
 167         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 168         dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 169         dst_vq->drv_priv = ctx;
 170         dst_vq->ops = &g2d_qops;
 171         dst_vq->mem_ops = &vb2_dma_contig_memops;
 172         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 173         dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 174         dst_vq->lock = &ctx->dev->mutex;
 175
 176         return vb2_queue_init(dst_vq);
 177 }
 178
 179 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
 180 {
 181         struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
 182                                                                 ctrl_handler);
 183         unsigned long flags;
 184
 185         spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
 186         switch (ctrl->id) {
 187         case V4L2_CID_COLORFX:
 188                 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
 189                         ctx->rop = ROP4_INVERT;
 190                 else
 191                         ctx->rop = ROP4_COPY;
 192                 break;
 193
 194         case V4L2_CID_HFLIP:
 195                 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
 196                 break;
 197
 198         }
 199         spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
 200         return 0;
 201 }
 202
 203 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
 204         .s_ctrl         = g2d_s_ctrl,
 205 };
 206
 207 static int g2d_setup_ctrls(struct g2d_ctx *ctx)
 208 {
 209         struct g2d_dev *dev = ctx->dev;
 210
 211         v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
 212
 213         ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 214                                                 V4L2_CID_HFLIP, 0, 1, 1, 0);
 215
 216         ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 217                                                 V4L2_CID_VFLIP, 0, 1, 1, 0);
 218
 219         v4l2_ctrl_new_std_menu(
 220                 &ctx->ctrl_handler,
 221                 &g2d_ctrl_ops,
 222                 V4L2_CID_COLORFX,
 223                 V4L2_COLORFX_NEGATIVE,
 224                 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
 225                 V4L2_COLORFX_NONE);
 226
 227         if (ctx->ctrl_handler.error) {
 228                 int err = ctx->ctrl_handler.error;
 229                 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
 230                 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 231                 return err;
 232         }
 233
 234         v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
 235
 236         return 0;
 237 }
 238
 239 static int g2d_open(struct file *file)
 240 {
 241         struct g2d_dev *dev = video_drvdata(file);
 242         struct g2d_ctx *ctx = NULL;
 243         int ret = 0;
 244
 245         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 246         if (!ctx)
 247                 return -ENOMEM;
 248         ctx->dev = dev;
 249         /* Set default formats */
 250         ctx->in         = def_frame;
 251         ctx->out        = def_frame;
 252
 253         if (mutex_lock_interruptible(&dev->mutex)) {
 254                 kfree(ctx);
 255                 return -ERESTARTSYS;
 256         }
 257         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
 258         if (IS_ERR(ctx->fh.m2m_ctx)) {
 259                 ret = PTR_ERR(ctx->fh.m2m_ctx);
 260                 mutex_unlock(&dev->mutex);
 261                 kfree(ctx);
 262                 return ret;
 263         }
 264         v4l2_fh_init(&ctx->fh, video_devdata(file));
 265         file->private_data = &ctx->fh;
 266         v4l2_fh_add(&ctx->fh);
 267
 268         g2d_setup_ctrls(ctx);
 269
 270         /* Write the default values to the ctx struct */
 271         v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
 272
 273         ctx->fh.ctrl_handler = &ctx->ctrl_handler;
 274         mutex_unlock(&dev->mutex);
 275
 276         v4l2_info(&dev->v4l2_dev, "instance opened\n");
 277         return 0;
 278 }
 279
 280 static int g2d_release(struct file *file)
 281 {
 282         struct g2d_dev *dev = video_drvdata(file);
 283         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 284
 285         v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 286         v4l2_fh_del(&ctx->fh);
 287         v4l2_fh_exit(&ctx->fh);
 288         kfree(ctx);
 289         v4l2_info(&dev->v4l2_dev, "instance closed\n");
 290         return 0;
 291 }
 292
 293
 294 static int vidioc_querycap(struct file *file, void *priv,
 295                                 struct v4l2_capability *cap)
 296 {
 297         strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
 298         strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
 299         cap->bus_info[0] = 0;
 300         cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 301         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 302         return 0;
 303 }
 304
 305 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 306 {
 307         struct g2d_fmt *fmt;
 308         if (f->index >= NUM_FORMATS)
 309                 return -EINVAL;
 310         fmt = &formats[f->index];
 311         f->pixelformat = fmt->fourcc;
 312         strncpy(f->description, fmt->name, sizeof(f->description) - 1);
 313         return 0;
 314 }
 315
 316 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 317 {
 318         struct g2d_ctx *ctx = prv;
 319         struct vb2_queue *vq;
 320         struct g2d_frame *frm;
 321
 322         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 323         if (!vq)
 324                 return -EINVAL;
 325         frm = get_frame(ctx, f->type);
 326         if (IS_ERR(frm))
 327                 return PTR_ERR(frm);
 328
 329         f->fmt.pix.width                = frm->width;
 330         f->fmt.pix.height               = frm->height;
 331         f->fmt.pix.field                = V4L2_FIELD_NONE;
 332         f->fmt.pix.pixelformat          = frm->fmt->fourcc;
 333         f->fmt.pix.bytesperline         = (frm->width * frm->fmt->depth) >> 3;
 334         f->fmt.pix.sizeimage            = frm->size;
 335         return 0;
 336 }
 337
 338 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 339 {
 340         struct g2d_fmt *fmt;
 341         enum v4l2_field *field;
 342
 343         fmt = find_fmt(f);
 344         if (!fmt)
 345                 return -EINVAL;
 346
 347         field = &f->fmt.pix.field;
 348         if (*field == V4L2_FIELD_ANY)
 349                 *field = V4L2_FIELD_NONE;
 350         else if (*field != V4L2_FIELD_NONE)
 351                 return -EINVAL;
 352
 353         if (f->fmt.pix.width > MAX_WIDTH)
 354                 f->fmt.pix.width = MAX_WIDTH;
 355         if (f->fmt.pix.height > MAX_HEIGHT)
 356                 f->fmt.pix.height = MAX_HEIGHT;
 357
 358         if (f->fmt.pix.width < 1)
 359                 f->fmt.pix.width = 1;
 360         if (f->fmt.pix.height < 1)
 361                 f->fmt.pix.height = 1;
 362
 363         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 364         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 365         return 0;
 366 }
 367
 368 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 369 {
 370         struct g2d_ctx *ctx = prv;
 371         struct g2d_dev *dev = ctx->dev;
 372         struct vb2_queue *vq;
 373         struct g2d_frame *frm;
 374         struct g2d_fmt *fmt;
 375         int ret = 0;
 376
 377         /* Adjust all values accordingly to the hardware capabilities
 378          * and chosen format. */
 379         ret = vidioc_try_fmt(file, prv, f);
 380         if (ret)
 381                 return ret;
 382         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 383         if (vb2_is_busy(vq)) {
 384                 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
 385                 return -EBUSY;
 386         }
 387         frm = get_frame(ctx, f->type);
 388         if (IS_ERR(frm))
 389                 return PTR_ERR(frm);
 390         fmt = find_fmt(f);
 391         if (!fmt)
 392                 return -EINVAL;
 393         frm->width      = f->fmt.pix.width;
 394         frm->height     = f->fmt.pix.height;
 395         frm->size       = f->fmt.pix.sizeimage;
 396         /* Reset crop settings */
 397         frm->o_width    = 0;
 398         frm->o_height   = 0;
 399         frm->c_width    = frm->width;
 400         frm->c_height   = frm->height;
 401         frm->right      = frm->width;
 402         frm->bottom     = frm->height;
 403         frm->fmt        = fmt;
 404         frm->stride     = f->fmt.pix.bytesperline;
 405         return 0;
 406 }
 407
 408 static int vidioc_cropcap(struct file *file, void *priv,
 409                                         struct v4l2_cropcap *cr)
 410 {
 411         struct g2d_ctx *ctx = priv;
 412         struct g2d_frame *f;
 413
 414         f = get_frame(ctx, cr->type);
 415         if (IS_ERR(f))
 416                 return PTR_ERR(f);
 417
 418         cr->bounds.left         = 0;
 419         cr->bounds.top          = 0;
 420         cr->bounds.width        = f->width;
 421         cr->bounds.height       = f->height;
 422         cr->defrect             = cr->bounds;
 423         return 0;
 424 }
 425
 426 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 427 {
 428         struct g2d_ctx *ctx = prv;
 429         struct g2d_frame *f;
 430
 431         f = get_frame(ctx, cr->type);
 432         if (IS_ERR(f))
 433                 return PTR_ERR(f);
 434
 435         cr->c.left      = f->o_height;
 436         cr->c.top       = f->o_width;
 437         cr->c.width     = f->c_width;
 438         cr->c.height    = f->c_height;
 439         return 0;
 440 }
 441
 442 static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 443 {
 444         struct g2d_ctx *ctx = prv;
 445         struct g2d_dev *dev = ctx->dev;
 446         struct g2d_frame *f;
 447
 448         f = get_frame(ctx, cr->type);
 449         if (IS_ERR(f))
 450                 return PTR_ERR(f);
 451
 452         if (cr->c.top < 0 || cr->c.left < 0) {
 453                 v4l2_err(&dev->v4l2_dev,
 454                         "doesn't support negative values for top & left\n");
 455                 return -EINVAL;
 456         }
 457
 458         return 0;
 459 }
 460
 461 static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 462 {
 463         struct g2d_ctx *ctx = prv;
 464         struct g2d_frame *f;
 465         int ret;
 466
 467         ret = vidioc_try_crop(file, prv, cr);
 468         if (ret)
 469                 return ret;
 470         f = get_frame(ctx, cr->type);
 471         if (IS_ERR(f))
 472                 return PTR_ERR(f);
 473
 474         f->c_width      = cr->c.width;
 475         f->c_height     = cr->c.height;
 476         f->o_width      = cr->c.left;
 477         f->o_height     = cr->c.top;
 478         f->bottom       = f->o_height + f->c_height;
 479         f->right        = f->o_width + f->c_width;
 480         return 0;
 481 }
 482
 483 static void job_abort(void *prv)
 484 {
 485         struct g2d_ctx *ctx = prv;
 486         struct g2d_dev *dev = ctx->dev;
 487
 488         if (dev->curr == NULL) /* No job currently running */
 489                 return;
 490
 491         wait_event_timeout(dev->irq_queue,
 492                            dev->curr == NULL,
 493                            msecs_to_jiffies(G2D_TIMEOUT));
 494 }
 495
 496 static void device_run(void *prv)
 497 {
 498         struct g2d_ctx *ctx = prv;
 499         struct g2d_dev *dev = ctx->dev;
 500         struct vb2_buffer *src, *dst;
 501         unsigned long flags;
 502         u32 cmd = 0;
 503
 504         dev->curr = ctx;
 505
 506         src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 507         dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 508
 509         clk_enable(dev->gate);
 510         g2d_reset(dev);
 511
 512         spin_lock_irqsave(&dev->ctrl_lock, flags);
 513
 514         g2d_set_src_size(dev, &ctx->in);
 515         g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
 516
 517         g2d_set_dst_size(dev, &ctx->out);
 518         g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
 519
 520         g2d_set_rop4(dev, ctx->rop);
 521         g2d_set_flip(dev, ctx->flip);
 522
 523         if (ctx->in.c_width != ctx->out.c_width ||
 524                 ctx->in.c_height != ctx->out.c_height) {
 525                 if (dev->variant->hw_rev == TYPE_G2D_3X)
 526                         cmd |= CMD_V3_ENABLE_STRETCH;
 527                 else
 528                         g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
 529         }
 530
 531         g2d_set_cmd(dev, cmd);
 532         g2d_start(dev);
 533
 534         spin_unlock_irqrestore(&dev->ctrl_lock, flags);
 535 }
 536
 537 static irqreturn_t g2d_isr(int irq, void *prv)
 538 {
 539         struct g2d_dev *dev = prv;
 540         struct g2d_ctx *ctx = dev->curr;
 541         struct vb2_buffer *src, *dst;
 542
 543         g2d_clear_int(dev);
 544         clk_disable(dev->gate);
 545
 546         BUG_ON(ctx == NULL);
 547
 548         src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 549         dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
 550
 551         BUG_ON(src == NULL);
 552         BUG_ON(dst == NULL);
 553
 554         dst->v4l2_buf.timecode = src->v4l2_buf.timecode;
 555         dst->v4l2_buf.timestamp = src->v4l2_buf.timestamp;
 556         dst->v4l2_buf.flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 557         dst->v4l2_buf.flags |=
 558                 src->v4l2_buf.flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 559
 560         v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
 561         v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
 562         v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
 563
 564         dev->curr = NULL;
 565         wake_up(&dev->irq_queue);
 566         return IRQ_HANDLED;
 567 }
 568
 569 static const struct v4l2_file_operations g2d_fops = {
 570         .owner          = THIS_MODULE,
 571         .open           = g2d_open,
 572         .release        = g2d_release,
 573         .poll           = v4l2_m2m_fop_poll,
 574         .unlocked_ioctl = video_ioctl2,
 575         .mmap           = v4l2_m2m_fop_mmap,
 576 };
 577
 578 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
 579         .vidioc_querycap        = vidioc_querycap,
 580
 581         .vidioc_enum_fmt_vid_cap        = vidioc_enum_fmt,
 582         .vidioc_g_fmt_vid_cap           = vidioc_g_fmt,
 583         .vidioc_try_fmt_vid_cap         = vidioc_try_fmt,
 584         .vidioc_s_fmt_vid_cap           = vidioc_s_fmt,
 585
 586         .vidioc_enum_fmt_vid_out        = vidioc_enum_fmt,
 587         .vidioc_g_fmt_vid_out           = vidioc_g_fmt,
 588         .vidioc_try_fmt_vid_out         = vidioc_try_fmt,
 589         .vidioc_s_fmt_vid_out           = vidioc_s_fmt,
 590
 591         .vidioc_reqbufs                 = v4l2_m2m_ioctl_reqbufs,
 592         .vidioc_querybuf                = v4l2_m2m_ioctl_querybuf,
 593         .vidioc_qbuf                    = v4l2_m2m_ioctl_qbuf,
 594         .vidioc_dqbuf                   = v4l2_m2m_ioctl_dqbuf,
 595
 596         .vidioc_streamon                = v4l2_m2m_ioctl_streamon,
 597         .vidioc_streamoff               = v4l2_m2m_ioctl_streamoff,
 598
 599         .vidioc_g_crop                  = vidioc_g_crop,
 600         .vidioc_s_crop                  = vidioc_s_crop,
 601         .vidioc_cropcap                 = vidioc_cropcap,
 602 };
 603
 604 static struct video_device g2d_videodev = {
 605         .name           = G2D_NAME,
 606         .fops           = &g2d_fops,
 607         .ioctl_ops      = &g2d_ioctl_ops,
 608         .minor          = -1,
 609         .release        = video_device_release,
 610         .vfl_dir        = VFL_DIR_M2M,
 611 };
 612
 613 static struct v4l2_m2m_ops g2d_m2m_ops = {
 614         .device_run     = device_run,
 615         .job_abort      = job_abort,
 616 };
 617
 618 static const struct of_device_id exynos_g2d_match[];
 619
 620 static int g2d_probe(struct platform_device *pdev)
 621 {
 622         struct g2d_dev *dev;
 623         struct video_device *vfd;
 624         struct resource *res;
 625         const struct of_device_id *of_id;
 626         int ret = 0;
 627
 628         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 629         if (!dev)
 630                 return -ENOMEM;
 631
 632         spin_lock_init(&dev->ctrl_lock);
 633         mutex_init(&dev->mutex);
 634         atomic_set(&dev->num_inst, 0);
 635         init_waitqueue_head(&dev->irq_queue);
 636
 637         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 638
 639         dev->regs = devm_ioremap_resource(&pdev->dev, res);
 640         if (IS_ERR(dev->regs))
 641                 return PTR_ERR(dev->regs);
 642
 643         dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 644         if (IS_ERR(dev->clk)) {
 645                 dev_err(&pdev->dev, "failed to get g2d clock\n");
 646                 return -ENXIO;
 647         }
 648
 649         ret = clk_prepare(dev->clk);
 650         if (ret) {
 651                 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
 652                 goto put_clk;
 653         }
 654
 655         dev->gate = clk_get(&pdev->dev, "fimg2d");
 656         if (IS_ERR(dev->gate)) {
 657                 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
 658                 ret = -ENXIO;
 659                 goto unprep_clk;
 660         }
 661
 662         ret = clk_prepare(dev->gate);
 663         if (ret) {
 664                 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
 665                 goto put_clk_gate;
 666         }
 667
 668         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 669         if (!res) {
 670                 dev_err(&pdev->dev, "failed to find IRQ\n");
 671                 ret = -ENXIO;
 672                 goto unprep_clk_gate;
 673         }
 674
 675         dev->irq = res->start;
 676
 677         ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
 678                                                 0, pdev->name, dev);
 679         if (ret) {
 680                 dev_err(&pdev->dev, "failed to install IRQ\n");
 681                 goto put_clk_gate;
 682         }
 683
 684         dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
 685         if (IS_ERR(dev->alloc_ctx)) {
 686                 ret = PTR_ERR(dev->alloc_ctx);
 687                 goto unprep_clk_gate;
 688         }
 689
 690         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 691         if (ret)
 692                 goto alloc_ctx_cleanup;
 693         vfd = video_device_alloc();
 694         if (!vfd) {
 695                 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
 696                 ret = -ENOMEM;
 697                 goto unreg_v4l2_dev;
 698         }
 699         *vfd = g2d_videodev;
 700         vfd->lock = &dev->mutex;
 701         vfd->v4l2_dev = &dev->v4l2_dev;
 702         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
 703         if (ret) {
 704                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
 705                 goto rel_vdev;
 706         }
 707         video_set_drvdata(vfd, dev);
 708         snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
 709         dev->vfd = vfd;
 710         v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
 711                                                                 vfd->num);
 712         platform_set_drvdata(pdev, dev);
 713         dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
 714         if (IS_ERR(dev->m2m_dev)) {
 715                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
 716                 ret = PTR_ERR(dev->m2m_dev);
 717                 goto unreg_video_dev;
 718         }
 719
 720         def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 721
 722         if (!pdev->dev.of_node) {
 723                 dev->variant = g2d_get_drv_data(pdev);
 724         } else {
 725                 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
 726                 if (!of_id) {
 727                         ret = -ENODEV;
 728                         goto unreg_video_dev;
 729                 }
 730                 dev->variant = (struct g2d_variant *)of_id->data;
 731         }
 732
 733         return 0;
 734
 735 unreg_video_dev:
 736         video_unregister_device(dev->vfd);
 737 rel_vdev:
 738         video_device_release(vfd);
 739 unreg_v4l2_dev:
 740         v4l2_device_unregister(&dev->v4l2_dev);
 741 alloc_ctx_cleanup:
 742         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 743 unprep_clk_gate:
 744         clk_unprepare(dev->gate);
 745 put_clk_gate:
 746         clk_put(dev->gate);
 747 unprep_clk:
 748         clk_unprepare(dev->clk);
 749 put_clk:
 750         clk_put(dev->clk);
 751
 752         return ret;
 753 }
 754
 755 static int g2d_remove(struct platform_device *pdev)
 756 {
 757         struct g2d_dev *dev = platform_get_drvdata(pdev);
 758
 759         v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
 760         v4l2_m2m_release(dev->m2m_dev);
 761         video_unregister_device(dev->vfd);
 762         v4l2_device_unregister(&dev->v4l2_dev);
 763         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 764         clk_unprepare(dev->gate);
 765         clk_put(dev->gate);
 766         clk_unprepare(dev->clk);
 767         clk_put(dev->clk);
 768         return 0;
 769 }
 770
 771 static struct g2d_variant g2d_drvdata_v3x = {
 772         .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
 773 };
 774
 775 static struct g2d_variant g2d_drvdata_v4x = {
 776         .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
 777 };
 778
 779 static const struct of_device_id exynos_g2d_match[] = {
 780         {
 781                 .compatible = "samsung,s5pv210-g2d",
 782                 .data = &g2d_drvdata_v3x,
 783         }, {
 784                 .compatible = "samsung,exynos4212-g2d",
 785                 .data = &g2d_drvdata_v4x,
 786         },
 787         {},
 788 };
 789 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
 790
 791 static struct platform_device_id g2d_driver_ids[] = {
 792         {
 793                 .name = "s5p-g2d",
 794                 .driver_data = (unsigned long)&g2d_drvdata_v3x,
 795         }, {
 796                 .name = "s5p-g2d-v4x",
 797                 .driver_data = (unsigned long)&g2d_drvdata_v4x,
 798         },
 799         {},
 800 };
 801 MODULE_DEVICE_TABLE(platform, g2d_driver_ids);
 802
 803 static struct platform_driver g2d_pdrv = {
 804         .probe          = g2d_probe,
 805         .remove         = g2d_remove,
 806         .id_table       = g2d_driver_ids,
 807         .driver         = {
 808                 .name = G2D_NAME,
 809                 .of_match_table = exynos_g2d_match,
 810         },
 811 };
 812
 813 module_platform_driver(g2d_pdrv);
 814
 815 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 816 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 817 MODULE_LICENSE("GPL");